Riello KV/200 20 ISC Solar Installation And Maintenance Manual page 37

SETTING DOMESTIC HOT WATER TEMPERATURE
Domestic hot water temperature is preset to 44°C in the
factory.
Adjust the thermostatic mixer valve to change this value.
The following table shows the hot water temperature val-
ues for the different mixer valve knob positions.
Knob
Min 1 2
position
Temperature
27 32 38 44 49 53 58 63
(°C)
Reference conditions:
Hot water temperature = 68°C
Cold water temperature = 13°C
Hot and cold water inlet pressure = 3 bar
Once you have set the required domestic hot water tem-
perature, you can lock the adjustment knob of the mixer
valve to prevent further tampering.
To do so, unscrew the fixing screw from the top of the
knob and pull off the knob. Fit the knob again so that the
keyway in the knob's body engages with the key in the
valve cap.
2
1 3
0 4
bar
3 4 5 6 7 Max
67
Domestic hot water from the
SOLAR STORAGE CYLINDER
60
40 80
20 100
0 120
°C
Cold water
Mixer valve pressure drop
p (bar)
1,5
1,0
0,5
0,3
0,2
0,1
0,05
Kv = 2,6 (m /h)
3
2
3
TECHNICAL ASSISTANCE SERVICE
DHW
user
points
p (m c.a.)
15
10
5
3
2
1
0,5
1
M I N
M A X
7
37